Baby bath tub



FIG. 1 is a perspective view of an implementation of a baby bath tub;

FIG. 2 is a front side view thereof, the back side, left side and right side each being a mirror image;

FIG. 3 is top view thereof;

FIG. 4 is a bottom view thereof; and,

FIG. 5 is an additional perspective view.

All broken lines are directed to environment and are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a baby bath tub, as shown and described. 